From the answer:
Appreciate your time bringing this to our attention, billoo, Since this issue requires technical expertise, I recommend contacting ProConnect so they can help ensure you’re QBSE client’s data will flow.

From the answer:
Hello there, chuparosa10, QuickBooks Self-Employed will track all of your mileage.... However, you'll need to categorize each trip to Business or Personal mileage
depending on the trip you made.

From the answer:
Technically you cannot deduct the cost of purchasing a vehicle - not even regular businesses can.... It is a fixed asset purchase and recovery of the cost as expense is taken over time.